Sample display unit



FIG. 1 is a perspective view of a first embodiment of an ornamentaldesign for a sample display unit according to the present invention;

FIG. 2 is a front view thereof; and,

FIG. 3 is a left side view thereof.

All portions shown in broken lines are environmental and illustrativeonly and form no part of the claimed design.

The ornamental design for a sample display unit, as shown and described.